All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...

Question

Question

All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...

All of the following are acid-base conjugate pairs EXCEPT

Group of answer choices

H₂O, H₃O⁺

NH₄⁺, NH₃

CH₃COOH, CH₃COO^-

H₃O⁺, OH^-

HPO₄^2-, PO₄^3-

The pH of a 1.86 M solution of a weak monoprotic acid, is 2.31.

What is the K_a of the acid?

Group of answer choices

4.7 x 10^-5

4.1 x 10^-7

3.4 x 10⁵

2.4 x 10^-4

1.3 x 10^-5

You have 250.0 mL of a 0.56 M solution of NaCH₃COO. How many milliliters of a 0.50 M CH₃COOH solution should be added to make a buffer of pH = 4.40?

K_a of CH₃COOH = 1.8 x 10^-5

Group of answer choices

620

750

200

710

230

science chemistry

Add a comment Improve this question Transcribed image text

Answer 1

Similar Homework Help Questions

All of the following are acid-base conjugate pairs EXCEPT A. HPO42-, PO43- B. H3O+, OH- C....

All of the following are acid-base conjugate pairs EXCEPT A. HPO42-, PO43- B. H3O+, OH- C. CH3COOH, CH3COO- D. NH4+, NH3 E. H2O, H3O+
For the following dissociation of acetic acid, Ka = 1.760 x 10-5: CH3COOH + H2O ?...

For the following dissociation of acetic acid, Ka = 1.760 x 10-5: CH3COOH + H2O ? CH3COO- + H3O+ Sodium acetate completely dissociates in solution according to the following reaction: NaCH3COO ? Na+ + CH3COO- A solution was prepared which contains CH3COOH at a pre-equilibrium concentration of 0.05782 M and NaCH3COO at a pre-equilibrium concentration of 0.04991 M. I know all answers, just do not know how to find them. What is the equilibrium concentration of H3O+? (Answer: 0.00002037) What...
Which of the following is a monoprotic acid? Group of answer choices Na3PO4 H3PO4 H2PO4– HPO42–...

Which of the following is a monoprotic acid? Group of answer choices Na3PO4 H3PO4 H2PO4– HPO42– PO43–

Calculate Ka for 1 M NaCH3COO pH = 9.37 H+ = 4.203 X 10^-10 OH- =...

Calculate Ka for 1 M NaCH3COO pH = 9.37 H+ = 4.203 X 10^-10 OH- = 2.402 X 10^-5 CH3COO- = 1.00 X 10^0 CH3COOH = 2.402 X 10^-5 ________________ Calculate Ka using the formula Kw = Ka X Kb and the appropriate equilibrium constant for 1 M NaCH3COO. NaCH3COO ---> Na+ (neutral) + CH3COO-. Is the conjugate base for CH3COOH. CH3COOH Ka1 = 1.8 X 10^-5 ______________________ Calculate Ka for 1 M NH4Cl pH = 4.26 H+ = 2.336...
5. Calculate the grams of NaCH3COO required for 100.0 mL of 0.20 M CH3COOH solution to...

5. Calculate the grams of NaCH3COO required for 100.0 mL of 0.20 M CH3COOH solution to achieve a pH of 4.40. (Assume no volume change.) K = 1.8 x 10-5 6. What is the pH of 100.0 mL of buffer consisting of 0.20 M CH3COOH/0.20 M NaCH3COO after 10.0 mL of 0.20 M HC1 was added into the solution ? Kg = 1.8 x 10-5 7. The pH of a sodium acetate-acetic acid buffer is 4.80. Calculate the ratio of...
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic...

1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of HCl is added (Ka HC2H3O2 = 1.75 x 10-5). Report your answer to the hundredths place. 2) Calculate the pH of the 1L buffer composed of 500 mL 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of NaOH is added (Ka HC2H3O2 = 1.75...

To understand how buffers use reserves of conjugate acid and conjugate base to counteract the effects...

To understand how buffers use reserves of conjugate acid and conjugate base to counteract the effects of acid or base addition on pH. A buffer is a mixture of a conjugate acid-base pair. In other words, it is a solution that contains a weak acid and its conjugate base, or a weak base and its conjugate acid. For example, an acetic acid buffer consists of acetic acid, CH3COOH, and its conjugate base, the acetate ion CH3COO−. Because ions cannot simply...
ASAP! What is Ka for the weak acid, HA, if a 0.020 M solution of the...

ASAP! What is Ka for the weak acid, HA, if a 0.020 M solution of the acid has a pH of 3.29 at 25ºC? a. 5.1 × 10-2 b. 6.9 × 10-2 c. 2.6 × 10-4 d. 1.3 × 10-5 e. 1.0 × 10-6 What is the conjugate acid of H2PO4–(aq)? a. H3O+ b. H3PO4 c. HPO42– e. PO43–
Which of the following is the strongest acid? Group of answer choices hypoiodous acid (molar mass:...

Which of the following is the strongest acid? Group of answer choices hypoiodous acid (molar mass: 143.89 g/mol; Ka = 2.0 x 10-11) acetic acid (molar mass: 60.05 g/mol; Ka = 1.8 x 10-5) nitrous acid (molar mass: 47.01 g/mol; Ka = 4.6 x 10-4) chloroacetic acid (molar mass: 94.49 g/mol; Ka = 1.4 x 10-3) chlorous acid (molar mass: 68.46 g/mol; Ka = 1.1 x 10-2) What is the concentration of [OH-] in pure water if Kw = 6.97...

please show all work neatly 5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka =...

please show all work neatly 5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka = 1.8x10-4 a. Which is the weaker acid, HPO42 or HCOOH? b. What is the conjugate base of, HPO42 or c. Which acid has the weaker conjugate base? d. Which acid produces more ions? 6. (2 pts) Write a balanced equation for the neutralization of H3PO4(aq) and NaOH(aq) (3...

All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...

Homework Answers

Request Answer!

Add Answer to:
All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...

Post as a guest

Earn Coins

All of the following are acid-base conjugate pairs EXCEPT A. HPO42-, PO43- B. H3O+, OH- C....

For the following dissociation of acetic acid, Ka = 1.760 x 10-5: CH3COOH + H2O ?...

Which of the following is a monoprotic acid? Group of answer choices Na3PO4 H3PO4 H2PO4– HPO42–...

Calculate Ka for 1 M NaCH3COO pH = 9.37 H+ = 4.203 X 10^-10 OH- =...

5. Calculate the grams of NaCH3COO required for 100.0 mL of 0.20 M CH3COOH solution to...

1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic...

To understand how buffers use reserves of conjugate acid and conjugate base to counteract the effects...

ASAP! What is Ka for the weak acid, HA, if a 0.020 M solution of the...

Which of the following is the strongest acid? Group of answer choices hypoiodous acid (molar mass:...

please show all work neatly 5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka =...

All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...

Homework Answers

Request Answer!

Add Answer to: All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...

Post as a guest

Earn Coins

Add Answer to:
All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...